Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of carbon steel welded square tube in China. Welcome to consult the quotation and import cheap carbon steel welded square tube made in China here from our factory.
Carbon Steel Welded Square Tube
| Standard | ASTM 5L, ASTM A53, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217 |
| Steel Grade | API 5L:PSL1/PSL2 Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70 |
| ASTM A53:GR.A, GR.B | |
| EN:S275, S275JR, S355JRH, S355J2H | |
| GB:Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360-L555 | |
| Out Diameter | 1/2"-24" |
| Wall Thickness | 1.65mm-20mm |
| Length | 3-12m, or According To Customer's Requirement |
| End | Plain End, Beveled End, Treaded |
| Process |
Argon arc welding, Submerged arc welding, High frequency welding |


Quality Assurance
Quality Control: Our carbon steel welded square tubes undergo a comprehensive quality control process at every stage of production. This includes raw material inspection, in - process inspection, and final product inspection.
Certifications: We hold various international certifications, such as ISO 9001, CE, and ASTM, ensuring that our products meet the highest quality standards.

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